Python programmers shouldn't get too smug. While many people agree that Python is designed in a way that makes it a highly readable language, there can still be problems with legacy, untested Python code too. Porting legacy Perl to Python can be a daunting task. In this article, learn some of the theory behind dealing with legacy code, including what not to do.

The more powerful something is, the bigger the hole you can dig yourself. When these things are done in the right way at the right times, they are invaluable. It takes skill, experience, and judgement.

I would agree with you if you are talking about crappy developers. Crappy developers can do much worse things when you have the ability to add or redefine language features.